Seaside LNG: Past, Present and Future
Seaside LNG was established to meet the growing supply needs for LNG for a wide range of industries including maritime transportation and aerospace. The company is focused on safely delivering LNG, a clean, domestically sourced fuel to end users utilizing assets throughout the coastal United States.
Seaside builds and invests in infrastructure and assets both marine and on land in order to establish new logistics paths for the rapidly growing LNG fuel demand across the U.S.

Leadership Team

Timothy Casey, Chief Executive Officer

Thomas Sullivan, Chief Operations Officer

Mark Britton, Director of Commercial Development
Mark Britton is an accomplished professional with more than 10 years of experience, including three years in finance and trading and eight years in the energy and maritime sector. Currently serving as the commercial director for Seaside LNG, he is dedicated to developing innovative solutions that drive the adoption of cleaner maritime fuels within the LNG bunkering market.
Mark leads initiatives to develop, enhance, and grow LNG bunkering operations, centering on strategic partnerships with organizations, port authorities, regulatory bodies, and other relevant stakeholders. He focuses on identifying industry needs, optimizing supply chains, and ensuring compliance with environmental regulations while fostering a culture of safety and sustainability.
With three years of sailing experience and holding a USCG Unlimited License as well as a Mate of Towing endorsement, Mark brings valuable maritime expertise to his role. This background enhances his understanding of marine operations, allowing him to effectively drive strategy through marine assets.
Prior to joining Seaside LNG, Mark served as a senior relationship manager at one of the top 10 largest banks in the world, where he built and maintained key client relationships through portfolio risk management.
Passionate about promoting LNG as a sustainable alternative to traditional marine fuels, Mark is committed to supporting the global transition to cleaner energy. He actively participates in industry conferences and working groups, sharing insights and best practices to foster innovation and drive growth in the LNG bunkering sector. He earned a B.S. in finance and economics from Rutgers Business School and a M.A. in international transportation management from SUNY Maritime College.

Douglas D. Shanda, Senior Advisor to the Board of Directors

New Affiliated Partnership
A Powerful Partnership
Industry Leaders
- Veteran team with an average of more than 25 years of experience in operating maritime, natural gas, and LNG businesses.
- Effectively executed the development of the first-of-its-kind, integrated LNG bunkering platform with small-scale LNG Liquefaction located in Jacksonville, FL.
- Longstanding well-established reputable business network with ports, regulators, ship owners, and shipbuilders across North America.
- Successfully built an integrated liquefaction plant, and leading the design, commissioning, and contract execution of the 5,500 CBM sister barge and associated tug to the Clean Canaveral/tug Polaris.